A number of documents were seized in the searches but they have been sealed while a ruling is sought on whether they are covered by parliamentary privilege.

Speaking on ABC Radio National this week, Conroy revealed he had written to the AFP repeatedly in the six weeks since the raids, seeking assurances on electronic communications that may have been intercepted as part of the investigation, and most recently questioning the legality of the raids.

“I’ve written to the Federal Police on Friday [July 1] asking them to end their ludicrous investigation into leaks on the NBN on the basis of legal advice that says NBN Co have incorrectly called the police in,” Conroy said.

“They are not Commonwealth officers, and I am seeking and demanding an end to the investigation, an apology from Ziggy Switkowski, an apology from [Communications Minister] Mitch Fifield who’s overseen this, and Ziggy Switkowski resign over it.”

Fifield, who was with Conroy on the same program, replied that he “won’t be apologising to Stephen”.